Extrusion press for manufacturing extruded sections from metal billets

摘要

A process and apparatus for the indirect extrusion of hollow sections over a mandrel having a diameter dD from a plurality of billets each having a diameter don wherein the volume throughput of metal is greater than that obtained by the indirect extrusion over a mandrel of said hollow sections from a single hollow billet under the same extrusion force thereby increasing productivity wherein the diameter of the mandrel dD with respect to the diameter don of the billet to be extruded over the mandrel is dD<0.4 don.